Border force hold a picket line at Gatwick Airport

The transcript discusses a strike action involving 140,000 union members who have been balloted. The strike is a response to a pay freeze and a 2.1% pay rise, which is insufficient given the 10% inflation rate. The union seeks a 10% pay rise to match inflation. The strike has strong support from members and the public, with an 80% turnout for industrial action. The union emphasizes that their issue is with the government, not the public, and they are open to negotiation if more funds are offered. The strike is planned in phases, with the first phase running from today until the 30th, and the mandate extends for six months.

What was the turnout percentage required to cross the threshold for the strike action?

What is the duration of the strike action as mentioned in the text?